iTunes with two accounts

I've owned an iPod touch for more than two years, and I've got a fairly large collection of music on that device. I also synched the collection in iTunes on my PC. My PC crashed badly recently, but more about that in a moment.

In May this year, I purchased an iPad at an iTunes store. The sales associate helped me set up a new [email protected] e-mail address.

To top it all off, I purchased a MacBook Pro two weeks ago to replace my dead PC. Now, here's my problem. I want to move my original iTunes account onto my new MacBook, and I want to synch that account with my iPod Touch and my iPad. However, I'm confused about my two accounts. My iPod Touch right now has all the music I've ever purchased from iTunes, but I purchased all that music with the account I set up two-plus years ago. It's not the same account I now have on my iPad.

Maybe I shouldn't be confused about this, but I am. Can someone please help me sort this out. Thanks!

In iTunes if I am not mistaken you will have to de-authorize the account on the PC and authorize the new MBP in order to dock your iPad and iPod and keep your liBrary intact.
If firing up the PC is impossible (you said it crashed) a call to Apple will have to happen
same thing happened to friend of mine took them all of 15 minutes to fix it.